public void Atan_Int_ReturnInt()
{
// arrange
var sp = new ScalarPrimitives <int, int>();
// action
var result = sp.Atan(-2);
// assert
Assert.AreEqual(-1, result);
}
public void Atan_Double_ReturnDouble()
{
// arrange
var sp = new ScalarPrimitives <double, double>();
// action
var result = sp.Atan(1);
// assert
const double Epsilon = 1e-8;
Assert.IsTrue(Math.Abs(0.785398163397448 - result) < Epsilon);
}